Material --- The lunch box is made of food grade stainless steel and PP, safe and durable, no distortion and rustproof, sealed silicone ring in each layer, better to keep warm and fresh. Leakproof - Each stainless steel inner layer is equipped with a soft silicone lid and buckle design. Double protection makes the bento box anti-scald and prevents leakage. You can bring soup or liquid food freely. Design --- The lunch box with 2 layers, keeping food separated and organized. The vent holes on the lid make it easy to open the lunch box when taking hot food. Portable handle for easy carrying. Portable --- This storage box with 2 layers, the lower tier is a single compartment, the upper tier is 2 compartments for more variety and more food. Application --- The lunch box is not only for lunch box container, but also can be used as a cooler bag, ideal for use in office, work, school, kindergarten, picnic and other outdoor activities.